Convert the PL111 specific code of LcdGraphicsOutputDxe into a LcdHwlib implementation that we will wire up later into LcdGraphicsOutputDxe. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Girish Pathak <girish.pathak@arm.com> Signed-off-by: Evan Lloyd <evan.lloyd@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>